Production of metallic strip, wire, rods, &amp;c.



' No. 799,634. PATBNTED SEPT. 19, 1905.

s. 0. GOWPER-OOLES. PRODUCTION OF METALLIC STRIP, WIRE, RODS, &c.

APPLICATION FILED FEB. 6, 1905.

I as shown at 2'), Fig. 1.

UNITED sTArEs PATENT OFFICE.

SHERAHD OSBORN COIVFER-UOLES, OF LONDON, ENGLAND.

PRODUCTION OF METALLIC STRIP, WIRE, RODS, 800.

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed February 6, 1905. Serial No. 244,382.

To all whom it may concern:

Be it known that I, SHERARD OSBORN Gow- PER-COLES, a subject of the King of Great Britain, residing at Grosvenor Mansions, Vic.- toria street, Westminster, London, England, have invented new and useful Improvements in the Production of Metallic Strip, Wire, Rods, and the Like, of which the following is a specification.

This invention relates to the production of metallic strip, wire, rods, and the like for electrical and other purposes.

According to the invention I make use of a mandrel or cathode which is preferably cylindrical and around the periphery of which I describe a fine groove or indentation, the said groove or indentation being in the form of a helix or spiral, the pitch of which depends upon the width of the rod or tape to be produced. If the groove or indentation is not very fine, the desired result isnot obtained. In practice I find it advantageous to employ a mandrel or cathode of the kind described in the specification of former British patents, Nos. 21,974 of 1898 and 9,731 of 1900, or in lieu of a cylindrical mandrel I may make use of a disk-shaped mandrelupon which is inscribed a spiral groove or indentation, as'

above mentioned. When the desired thickness of metal has been deposited upon the mandrel in the usual way, the latter is removed from the vat, when it is found that the metal sheet can be wound off from the mandrel with facility in the form of a spiral, the metal parting along the line of the groove or indentation.

but showing a thickness of metal deposited upon the mandrel. Fig. 3 is a plan view of the deposited metal. Fig. 4 is a transverse section thereof, and Fig. 5 is a perspective view illustrating the mode in which the deposited metal separates. Fig. 6 is a partial view of a modified form of cathode.

a represents the cathode, which, as above described, is of cylindrical shape and which is formed upon its periphery with a fine spiral groove or indentation,preferably of a V shape,

As the mandrel is rotated at a high velocity in the vat or tank the metalsay copper-4s deposited upon the indented or grooved cathode a, as shown at d, Fig. 2. This deposited metal presents a spiral marking.upon its outer surface, as illustrated in Fig. 3, due to the formation during the deposition of the metallic layer of a spiral cleavage plane 0, which has its origin at the bottom of the V-shaped spiral groove or indentation.

been deposited and the cathode, with the deposit, is removed from the vat, it will be found that the metal deposit can be stripped off in a continuous spiral from the mandrel, as indicated in Fig. 5, the'metal parting along the aforementioned cleavage plane.

As above stated, in lieu of the cylindrical cathode I- can employ a disk-shaped cathode,

which is formed with a spiral scratch or indentation and upon which the metal is deposited in the same way and can be similarly detached in the form of a continuous strip.

Having now particularly described'and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. In the art of electrodeposition, the process of forming a deposit which will readily divide on a desired line, which consists in depositing the metalupon a cathode provided with a fine shallow groove or indentation along the line of the desired separation, substantially as described.

2. In the art of electrodeposition, the process of forming adeposit which will readily divide on a desired line to form strips or the like, which consists in depositing the metal upon a cathode provided with a spiral groove or indentation, the space between the different parts of said groove forming the width desired for the strip or like article, substantially as described.

3. In the art of electrodeposition, the process of forming strips, rods or like articles, which consists in depositing the metal upon a cylindrical. cathode provided with a spiral groove with the space between the different parts of the groove of the width of the desired strip, rod or like article, substantially as described.

SHERARD OSBORN (lOWIElt-COLES. Witnesses:

JOHN E. BOUSFIFLD, G. G. REDFERN.

VVhen the required thickness of metal has 

